i have an air cooled (6") hood with a 6" Eco Plus fan pulling air through the light. it's sealed with glass and tape and it's air tight. I can't use air cond. because there is no room in my tiny room. i have an air cond. outside the small room (total size 3.5'X7'X8') but that doesn't help.
for air exchange, i have installed a rectangular register in the wall between my small room and my main apt. i have a split after the register and half of the 14"X7" opening goes to the 400 HPS drawn by a 6" Eco plus fan (440cfm). the other half goes through a back draft damper, then a suncourt 6" fan (180cfm). That fan turns on when my Eco Plus 4" fan turns on to send air out of my room. I'm using a timer in my tests that turns on the ventilation for half an hour every two hours. half hour on, 1.5 hours off. Unfortunately, and I've discovered that the suncourt 6" fan is not pulling any air even though it's on. the suncourt is running but it's only 180cfm's and the Eco is 440cfm so i assume it's being over powered. The suncourt says it's 300cfm but then you find out that's only if you are using it as a "booster". not sure how to deal with this problem because i can't cut any more holes in my apartment. oh, the suncourt blows tons of air when the 6" Eco is off. The only other inlet is a 4" computer fan pulling through a 4" duct opening.
thanks for the help.
mG